Re: [PATCH v3 1/3] platform/chrome: cros_ec_proto: Introduce cros_ec_cmd_readmem()

[Thomas Weißschuh]

On 2024-05-28 06:39:03+0000, Tzung-Bi Shih wrote:
> On Mon, May 27, 2024 at 10:58:31PM +0200, Thomas Weißschuh wrote:
> > +/**
> > + * cros_ec_cmd_readmem - Read from EC memory.
> > + *
> > + * @ec_dev: EC device
> > + * @offset: Is within EC_LPC_ADDR_MEMMAP region.
> > + * @size: Number of bytes to read. zero means "read a string" (including
> > + *        the trailing '\0').
> 
> The behavior is cros_ec_lpc_readmem() only but not for cros_ec_cmd().

Indeed.
I thought I checked for this specifically, but got it wrong.

I'll drop the docs and add a

	if (!size)
		return -EINVAL;

to make sure nobody starts relying on that behaviour when writing a
driver against an LPC EC.